5#if (defined ROO_THREADS_ATOMIC_USE_CPPSTD)
12using memory_order = roo_threads::cppstd::memory_order;
17using atomic = roo_threads::cppstd::atomic<T>;
21#elif (defined ROO_THREADS_SINGLETHREADED)
28using memory_order = roo_threads::singlethreaded::memory_order;
33using atomic = roo_threads::singlethreaded::atomic;